.top_totle{ font-size: 16px; line-height: 34px; padding-left: 24px;}
.conten_box{border-radius: 4px; margin-left: 20px; border: 1px solid #ccc; min-height:916px ; overflow: hidden;}
.conten_box .top_nav{ height:44px ; border-bottom: 1px solid #ccc; font-size: 15px;}
.top_nav a{ color: #676565; line-height: 44px; float: left; padding: 0 16px;}
.top_nav  span{ float: left; font-weight: bold;line-height: 44px;color: #676565;}	
	.top_nav a.active{ color: #333;}
.machines_warp{ overflow: hidden; padding: 24px;}